<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>图片底部空白bug</title>
</head>

<body>

    <div style=" border: 2px solid black;">
        <img style="vertical-align: top;" src="img/img.jpg">
    </div>


</body>

</html>